Bumper of a truck vehicle



FIG. 1 is a front and left side perspective view of a bumper of a truckvehicle showing our new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a bumper of a truck vehicle, as shown anddescribed.